Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With normally open stock chamber
Reexamination Certificate
2006-12-12
2006-12-12
Del Sole, Joseph S. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With normally open stock chamber
C366S101000, C425S546000, C425S542000, C425S578000, C222S004000, C264S085000
Reexamination Certificate
active
07147460
ABSTRACT:
The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.
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Dick Sami
Leturmy Marc
Melen Stéphane
Negro Olivier
Clark Brandon S.
Cronin Christopher J.
Del Sole Joseph S.
Ewald Maria Veronica
L'Air Liquide, Societe Anonyme A Directoire et Conseil de Survei
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